string[] arID = { "0001", "0002" };
var dict = this.service.GetMyList(m => arSatID.Contains(m.ID))//等同于SQL里的 id in('0001','0002')
    .Select(m => new { m.ID, m.Name,m.Age })
    .ToDictionary(s => s.ID);//以ID作为key,{ID,Name,Age}作为Value，转化为Dictionary

foreach (var kvp in dict)
{
    string user = "姓名：" + kvp.Value.Name;
}